Proportional Directional Valve 4WRZE16W6-180-7X/6EG24ETK31/F1D3V - Bosch Rexroth R901401991

Once a hydraulic axis has to vary its flow steadily and needs 180 l/min nominal, direct operated valves reach their limit. The 4WRZE16W6-180 is pilot operated, carries up to 460 l/min at size 16 and withstands 350 bar operating pressure. The command signal is 4...20 mA, which stays immune to interference even over long cable runs between control cabinet and machine.

Benefits

• 180 l/min nominal flow at size 16, with peaks up to 460 l/min.
• 350 bar operating pressure suits press and forming hydraulics without giving away pressure headroom.
• Command value as 4...20 mA, so a broken wire shows up immediately in the current reading.
• On-board electronics run from the 24 VDC supply, no separate amplifier card is required.
• FKM seals instead of NBR cover higher oil temperatures and more aggressive additive packages.
• Spool symbol W6 with 3 switching positions and 4 ports, port pattern to ISO 4401-07-07-0-05.

Technical data

Applications

Typical duty is on press axes, injection moulding machines and test rigs where a cylinder is moved under control in both directions. Pilot oil is supplied and returned internally, so the valve only needs ports P, T, A and B of the subplate. The integrated pressure reducing valve keeps the pilot pressure constant even when system pressure fluctuates.

Manufacturer

Bosch Rexroth lists this valve under material number R901401991. 2 manufacturer documents cover characteristic curves, port pattern and installation dimensions.